we want to welcome our viewers in the united states and around the world. i'm wolf blitzer. you're in "the situation room." >>> i am less interested in passing out blame than i am in learning from and correcting these mistakes to make us safer. for ultimately the buck stops with me. as president i have a solemn responsibility to protect our nation and our people and when the system fails, it is my responsibility. >> president obama taking responsibility this week for america's closest brush with airline terror in years. he suggested no one will be fired at least for now and he ordered a series of reforms including tougher rules for putting people on the no fly list, and more widespread distribution of intelligence reports. the president also renewing his declaration of war on al qaeda and its growing presence in yemen. cnn international security correspondent paula newton is in yemen for us. we'll go to her in a moment. also here in washington are our homeland security correspondent jeanne meserve and former homeland security inspector general clark kent irvin. thanks to all